NEW 2,3-DIHYDRO-5H-1,4-BENZODIOXEPIN DERIVATIVES - EASY FORMATION ANDX-RAY STRUCTURE DETERMINATION OF A PENTACYCLIC ACETAL CONTAINING A 14-MEMBERED CARBON-OXYGEN RING
F. Lucchesini et al., NEW 2,3-DIHYDRO-5H-1,4-BENZODIOXEPIN DERIVATIVES - EASY FORMATION ANDX-RAY STRUCTURE DETERMINATION OF A PENTACYCLIC ACETAL CONTAINING A 14-MEMBERED CARBON-OXYGEN RING, Tetrahedron, 51(35), 1995, pp. 9757-9766
The acid catalyzed acetalization of 2,6-bis(2-hydroxyethoxy)benzaldehy
de (4) is studied under various conditions. New 2,3-dihydro-5H-1,4-ben
zodioxepin derivatives are prepared and a fourteen-membered tetraoxyge
nated macrocycle is obtained in 81% yield without special synthetic ex
pedients. The solid state molecular structure of the macrocyclic compo
und is determined by single crystal X-ray analysis.